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UNSD Environmental IndicatorsStatistics on Water and Waste are based on official statistics that had been supplied by national statistical offices and/or ministries of environment (or equivalent institutions) in countries in response to the biennial UNSD/UNEP Questionnaire on Environment Statistics. They were complemented by data from the Food and Agriculture Organization of the United Nations (FAO) on water resources. Data on EU and OECD member and partner countries are from OECD and Eurostat. Statistics on other themes listed below have been compiled from other international organizations. The themes and indicator tables were selected based on the current demands for international environmental statistics and the availability of internationally comparable data. In a few tables, UNSD has made additional calculations in order to derive certain indicators. However, generally no adjustments have been made to the values received from the source. UNSD is not responsible for the quality, completeness/availability, and validity of the data obtained from outside sources. Environment statistics is still in an early stage of development in many countries, and data are often sparse. The indicators selected here are those of relatively good quality and geographic coverage. Information on data quality and comparability is given at the end of each table together with other important metadata.
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